Vehicular door frame, and vehicular door frame intermediary member

Abstract

A vehicular door frame includes an outer member constituting a glass-run housing portion and an inner member to be coupled to the outer member. The outer member includes a folded portion with substantially U-shaped cross-section and a return portion. The return portion raises a portion of the housing portion closer to a proximal end portion than the folded portion in a flat manner at least to a first-side end position of the folded portion. The inner member includes an extended portion and a distal end surface on an edge portion of the extended portion. A projection portion on the distal end surface protrudes toward a first side. The projection portion is arranged at a predetermined position on the inner member in the longitudinal direction, and is heated and melted through current concentration during resistance welding, and the distal end surface and a facing portion of the folded portion are pressure-bonded.

1 . A vehicle door frame, comprising:
 an outer member, which constitutes a glass-run housing portion made of a board, wherein the outer member has a basal end portion and is located on a first side;   an inner member made of a board including a body portion, which configures a framework of a window frame, wherein the inner member is configured to be coupled to the outer member on a second side that is opposite to the first side, wherein   the outer member includes
 an edge portion, which constitutes the glass-run housing portion at a position that is apart from the basal end portion, 
 a folded portion, which is provided on the edge portion and has a substantially U-shaped cross section, wherein the folded portion includes an opening, which opens to the second side, and a first-side end that is positioned nearest to the first side, and 
 a return portion provided at a position that is closer to the basal end portion than the folded portion of the glass-run housing portion is, wherein the return portion raises the portion that is closer to the basal end portion than the folded portion of the glass-run housing portion is in a flat manner at least to a position of the first-side end of the folded portion, 
   the inner member includes
 an extended portion, which is provided on the body portion and extends on the first side; 
 an edge portion, which is provided on the extended portion and configured to be inserted into the opening of the folded portion, and 
 a distal end surface, which is provided on the edge portion of the extended portion, wherein 
   a projection portion is provided on the distal end surface and protrudes toward the first side,   the projection portion is arranged at a predetermined position on the inner member in a longitudinal direction, and   the projection portion is heated and melted through current concentration when a resistance welding is performed, and the distal end surface and a facing portion of the folded portion are pressure-bonded to each other.   
     
     
         2 . The vehicle door frame according to  claim 1 , wherein the glass-run housing portion includes a coupling portion, which couples a channel with a portion that is closer to the basal end portion than the folded portion of the glass-run housing portion is, wherein the channel guides a movement of a door window glass provided on the window frame in an openable and closable manner. 
     
     
         3 . (canceled) 
     
     
         4 . The vehicle door frame according to  claim 1 , wherein the return portion raises the portion that is closer to the basal end portion than the folded portion is to a position of the first-side end of the folded portion in a state in which the return portion is layered with the folded portion. 
     
     
         5 . The vehicle door frame according to  claim 1 , wherein the outer member has a glass-run housing portion with a substantially L-shaped cross section. 
     
     
         6 . The vehicle door frame according to  claim 1 , wherein the return portion extends toward the first side from a starting point that is a position that is shifted from the folded portion toward the basal end portion. 
     
     
         7 . The vehicle door frame according to  claim 1 , wherein the folded portion extends in a direction in which a width of the opening is increased such that a gap is defined between the folded portion and the extended portion. 
     
     
         8 . An intermediary member of a vehicle door frame, comprising:
 an outer member, which constitutes a glass-run housing portion made of a board, wherein the outer member has a basal end portion and is located on a first side;   an inner member made of a board including a body portion, which configures a framework of a window frame, wherein the inner member is configured to be coupled to the outer member on a second side that is opposite to the first side, wherein   the outer member includes
 an edge portion, which constitutes the glass-run housing portion at a position that is apart from the basal end portion, 
 a folded portion, which is provided on the edge portion and has a substantially U-shaped cross section, wherein the folded portion includes an opening, which opens to the second side, and a first-side end that is positioned nearest to the first side, and 
 a return portion provided at a position that is closer to the basal end portion than the folded portion of the glass-run housing portion is, wherein the return portion raises the portion that is closer to the basal end portion than the folded portion of the glass-run housing portion is in a flat manner at least to a position of the first-side end of the folded portion, 
   the inner member includes
 an extended portion, which is provided on the body portion and extends on the first side; 
 an edge portion, which is provided on the extended portion and configured to be inserted into the opening of the folded portion, and 
 a distal end surface, which is provided on the edge portion of the extended portion, wherein 
   a projection portion is provided on the distal end surface and protrudes toward the first side,   the projection portion is arranged at a predetermined position on the inner member in a longitudinal direction, and   the projection portion is heated and melted through current concentration when a resistance welding is performed, and the distal end surface and a facing portion of the folded portion are pressure-bonded to each other.